Metal-working machine



Nov. 4, 1930. R, 8, ROWN 1,780,889

METAL WORKING MACHINE Filed Jan. 14, 1928 4 Sheets-Sheet 1 IN V EN TOR.

W 5. 5171mm ATTORNEYS.

Nov. 4, 1930. s, BROWN 1,780,889

METAL WORKING MACHINE Filed Jan. 14, 1928 4 Sheets-Sheet 2 IN V EN TOR.

kfimlmoms/ A TTORNEYS.

Nov. 4, 1930. R. 5. BROWN METAL WORKING MACHINE Filed Jan. 14, 1928 4Sheets-Sheet FAT TTI IH II; II

IN V EN T 0R. 5.

A TTORNEYS.

Nov. 4, 1930. R 8 BROWN 1,780,889

METAL WORKING MACHINE 7 Filed J an. 14, 1928 4 Sheets-Sheet 4 IN VENTOR.

A TTORNEYS.

Patented Nov. 4, 193a NET ROBERT s. BROWN, on NEW BRITAIN, CONNECTICUT,AsSIGNo r, BY vrnsivn assIGN- MENTS, TO THE NEW BRITAINFGEIDLEY MACHINECOMPANY, on new BRITAIN, conivncr cur, A ooaroaarron or CONNECTICUT IErAL-womrme MACHINE Application filed January 14, 1928. Serial No.246,843.

,My invention relates to a metal working machine, and more specificallyto a multiple spindle machine in which a plurality of work carriers areso arranged and related to each other'as to permit thetransfer of workpieces from one carrier to another.

It is an object of the invention to pro vide a machine of the characterindicated wherein a plurality of indexible work. carriers are indexedand held so as to permit the transfer of work pieces from one carrier toanother.

It is another object to provide two work carriers with a common means:for indexing both carriers simultaneously and in a certainpredetermined relation to each other.

It is a more specific object to provide. a machine with a magazinefeeddevice so arranged as to permlt the transfer of work pieces from themagazine to a carrier.

It is another object to provide a novel form of magazinefeed device formachine of the character indicated.

Other objects and thefeatures of the invention will become apparent upona reading of the specification taken in'conneetion with the illustrativedrawings.

While the invention may be variously embodied and embodied in machinesof various types, I have chosen as an illustrative, embodiment a stationtype of machine employing rotary work carrying spindles and nonrotatableadvancing tools.

In said drawings which show, for illustrative purposes only, a preferredembodiment of the invention Fig. 1 is a fragmentary longitudinalvertical sectional view of a metal workingmachine illustrating featuresof the invention;

Fig. 2 is an enlarged view in elevation of two work carriers shown inFig. 1 and illustrating their mutual relationship;

Fig. 3 is an enlarged plan view of the two carriers and the associatedmechanism of Fig. L is an enlarged fragmentary View illustrating a meansfor indexing two carriers simultaneously and in predetermined rela tionto each other;

5 is an enlarged .fragmentary detail sectional View of two carriers andillustrating one method of transferring work pieces from one carrier tothe other; i I

Fig. 6 is a fragmentary sectionalviewiof a work carrier takensubstantially in the plane of the line 6- 6 of Fig. 5. I

In said drawings,1 indicates the base or frame of a well known'ty-p'e ofmetalworking machine embodying an indexible carrier 2. The carrier has aplurality of work holding means, and, in the illustrative form. shown,the work holding means are mounted upon rotatable splndles 3-3,:journailledin the carrier 2 and equidistantlyspaced from each other andfrom the axis of the carrier 2. Each spindle carries a suitable chuck,the particular form shown being of the collet type illustrated moredetail in Fig.- 5, actuated by means of a wedge spool 4, which may inturn be moved by means of apin 5 under the control of a .cam drum 6, aswillbe readily understood by one skilled in the art. As shown, the wedgespools of each spindle is actuated only in the leading position of eachspindle as it reaches such position on the indexing of the spindlecarrier 2. I

The spindles 3-3'maybe rotated by means of a shaft 7 passing centrallythrough the carrier 2 and provided at the rear with a gear 8, meshingwith corresponding gears 9- 9 carried upon the respective spindles. Workpieces held in the chucks of the respective (notshown) carried by a toolcarrier 10, which, in the fed forwardly by a cam on spindles areactedupon by tools form shown, is the main cam drum 11. If desired crossslides (not shown) ma-y also be employed.

The main cam shaft 12 carries the ca rn drum 11 and the cam drum 6, asis usual in machines of this type. The particular driving means for thecam drum 1'1 and the main cam shaft 12, as well as for the spindle driveshaft 7 ,may be conventional.

' The carrier 2 is indenedstep by step by suit able means and, in theform shown, the spindle carrier 2 has mounted upon the cam shaft 12. Agear 15 afgear 13 secured thereto which meshes with a second gear 14,rotatably ing a roller 18 thereon. curedto or may be part of a starwheel havshaft 12 .the gear whichmayalso carry'a Geneva arm17 hav- Thegear 14 is seing'slots 19 therein, for the reception of the roller 18.Now, upon rotation of the cam with it the arm 17 and roller 18, whichenters p the slots 19 periodically, so as to rotate the .rier 2 is thusindexed.

' The carrier 2 may have the appropriate cam shaft 12. It

I Y o u a r dexmg of the turret 01302111161 2, and will and need nofurther I so of opposed jaws 27-27,

the main gear 13 gears 14- and consequently The spindle caron thespindle carrier 2.

number of grooves or slots 2020," for the reception of a locking bolt 21ig. 4.) This locking bolt, which may be of conventional form,'isactuated by. means of-a lever 22, which is moved by a cam 23 carried bythe will, of course, be understood that the parts are timed so that thelocking bolt 2l:will be withdrawn prior to inbe again projected intooneQof the slots 20 after each pleted. p r V I Machinesjofthexgeneraltype as thus far described are old, and well tion' at thistime.

In accordance with my invention a second.

carrier or turret is employed and sorelated the carrier 25 journalledthereon, or it may.

be a shaft ournalled in bearings notshown) but still permitting rotationof the: work carrier 25. The carrier-25 is provided with a pluralityofwork holding means which',in the specific example illustrated,. arenot spindles such asthose 2, but are in the form of chucks, consisting.

resiliently urged to-- ward each otherby means of a spring. 28.

The work carrier 25 may disk having a thick peripheral-flange, which isslotted circumferentially at29 and which is providedwitha plurality ofbores 3030.

1 for'the-reception-of the inner ends of the jaws 27727 of the workholding chucks. The .jaWs 27 +27 are heldand guided in transverse .slots-3l 31, in the periphery-of the carrier 25. The jaws may holdingportions 3232 at V 1 lieved,'as indicated at 3333, for the purpose lrelieving the jaws at 38, and the'work piece may begripped byitssmallerdiameter, if. i desired;

of permitting an enlarged portion ofa work piece 34 to be received inthe space formed by The relieved portions. of the j awsarepreferablytapered, as at 35, to permitv 1,5 drives the gear 16, and

I preferably indexing movement has been com-' known in the art,description or explana carried by the carrier .in registryp I In theparticular form of the device hereinillustrated, the carrier 25 isdesignedto be fed with individual workpieces, as shown,

bein -the form of a each include work the front side,: and at the rearthese jaws are preferably replunger46, carried by I positioned inalignment with the "point of 3 and a chuckon the I the same to be-spreadapart by the enlarged head on the work piece 34", as-will be clear.

, The rear ends of the jaws may be provided With projectingv bearingstuds 3636, which are received in corresponding recesses in a ring 37.The forward ends of the jaws are -3838, carried by a ring or disc 39,secured to the face of the carrier 25. The front ends of the jaws527-27have elongated slots 40, projecting ends 38,

for the reception of the guided upon projecting portions so thatconsiderable spreading movement of s *theja'w is permitted. The rings 3737, .as well as the corresponding frings' 39.39 on the opposite sideof'thecarriers25, may be held in place, as by meansof screws 41 41, aswill be seen in Fig. 2.

The carriers 2 and 25 are so proportioned and spaced that a circlethrough the axes,

of the spindles 38 and a circle'through the centers of the work holdingchucks of the? carrier .25 are tangent to each other at one point, andconsequently at that point one, I of the spindles and one-of the. workholding chucks on the carrier 25 may be registry or in alignment witheach other. I

The carrier 25 is indexed at the timeof indexing .of the carrier 2,:and'I prefer to index both carriers by a common means, such I asthe starwheel or Geneva motion hereinbe.

fore described- 1 a In the; form shown I employ, a shaft 42, carrying agear 43, meshing with and driven by the gear 13 carried by the carrieror turret 2. The shaft 42at its-oppositeend carries a pinionv 44,which'meshes with an internal gear 45, movable with the carrier 25: The

Geneva motion and V same,as well as the gear ng ust described and shownmoreparticularly in Fig. 4, are proportioned so that each spindle Sandeach be successivelychuckon the carrier 25 will moved to and stopped atthe tangent point of-the circles mentioned, that is to say, after eachindexing movement aspindle on the carrier 2 and a chuck for example, inFig. 5, and theiwork pieces from the work on the carrier 25 'will'befholding means of the carrier gearlng for driving the.

25 are automatically transferred to the chucks I carried by the spindles'3'. The transferring means which I have illustrated is a simple thetool slide 10 and registry of a spindle carrier 25. A plate 47 may becarried by the frame of the machine or othersuitable part and maysubstantially coverthe open ends of the chucks on'the carrier 25, sothat an operative, in filling the magazineor carrier 25, cannot; pushthe work pieces too far through the chucks.

. *Asfwill be seen particularly in Figs. 2 and 3, the plate 47 isprovided with a scallop 48, so as to expose the open end of the chuck orcarrier 25, which is in registry with the spindle in loading positionand thus permit the ejection of a work piece from the carrier 25.

The operation of the device is as follows:

An operative may fill the magazine or carrier 25 with appropriate workpieces. During the rotation of the spindle shaft 7 the spindles arerotated, and during the rotation of the cam shaft 12 the locking bolt 21is withdrawn by the cam 23 and the spindle carrier 2 indexed by means ofthe gear 13 and Geneva mechanism hereinbefore described. During theindexing of the carrier 2, the carrier 25 is also indexed through thegearing shown more particularly in Fig. 4, so as to bring each chuck ofthe carrier. 25 successively into registry or alignment with the spindlewhich has been indexed to the loading position. Upon further rotation ofthe cam shaft the locking bolt 21 is again projected and locks thespindle carrier 2 in position and, in a simple magazine device as hereinillustrated, no separate locking means need be employed for the magazineor carrier 25, since the gearing shown in Fig. 4 serves to hold thecarrier 25 in indexed position with a sufiicient degree of accuracy.Upon rotation of the cam shaft 12 the cam 6 serves to open the chuck onthe spindle in the loading position, and upon the advance of the toolslide 10, under the influence of the cam drum 11, the plunger 46 forcesthe work piece through the chuckon the carrier 25 and into the chuck onthe registering spindle 3. The tools carried by the tool slide I0perform their respective operations upon the work pieces in the otherspindle chucks. Before the two carriers are again indexed the cam 6 mayagain close the chuck in the spindle which has just been loaded.

It is to be understood that during the feeding of a new work piece intoa chuck in a spindle 3, the Work piece previously in such spindle chuckis forced rearwardly through the hollow spindle 3, and when sufficientfinished work pieces have accumulated in the spindles 3, the rearinostwork piece will be forced out each time that a new work piece istransferred to each spindle.

While the invention has been described in connection with one particularkind of machine and a carrier 25 has been indicated as merely a magazinefor holding individual work pieces and permitting the same to betransferred to chucks carried by the spindles 3, it is to be understoodthat the invention of broader application and may be employed inconnection with other types of machines and embodied in other forms.

I claim:

1. In a machine of the character indicated, a spindle carrier, a groupof spindles carried by said spindle carrier and arranged equidistantfrom the axis of thecarrier, work holdingmeans for each spindle, meansfor,

indexing said spindle carrier" including a gear, on said carrier, meansfor holding said carrier in indexed position, a second work holdingcarrier, a plurality of'work holding means. on said second work holdingcarrier and arranged equidistant from the axis of said carrier, gearingconnecting said first carrier with" said second carrier for indexingsaid second carrier when said first carrier is indexed, said gearingbeing arranged to per-1=1 odically bring work'holding meansinfsaidsecond carrier opposite work holding meansin said first carrierto permit work held in one carrier to be. transferred to the other'car--rier. 7 2. In a machine of the character indicated, two work holdingcarriers, work hold-ing means on each of said carriers, means for inde-xing one of said carriers, connecting means between said carriers forindexing't-he' other carrier when the firstfcarrieris in dexed, andmeans forperiodically causing work holding means in one-carrier to-register with work holding means in the other:

carrier, afixed plate adj acent said other cars 1' rier: and havingarecess therein, and means: to transferwork pieces: from one carrier: toanother throughsaid recessedplate.

' 3. In a machine of the character indicated,

a work carrier having a plurality'of rotary spindles therein, workholding means for each spindle, means for indexing said carrier, asecond carrier, means connecting said carriers. for causing'both'carriersto be in dexed simultaneously, said second carrier having aplurality of iwork holding means, said carriers being arranged so as tobring one work holding means in each carrier into registry for eachindexing movement, a-fixedplate. adjacent said other carrier and forming an abutment. for work pieces'i-n work holders in said other carrier,said plate having a recess therein, and imeans'totransfen work piecesfrom-one carrier to another through said recessed plate. 1 k

a. In a machine of the character indicated, a spindle carrierhaving aplurality of work carrying spindles therein, a gear carried by; saidcarrier, means for rotating said gear periodically to-index saidcarrier, a second carrier, means for indexing'said second carrierthroughsaid gear on said spindle carrier, said second carrier having aplurality of u work holding means thereon, said carriers being arrangedso asto bring one work hold ing means in each carrier into registry witheach other for each indexing movement, a fixed plate adjacent saidsecondcarrier and enclosing the indexing mechanism, said plate having a recesstherein, andrmeans to transfer work pieces from said second carrier tosaid first carrier through said recessed plate.

f 'In a machine ofthe character indicated,

. a pair of carriers,'each having a plurality ofi workholding meansthereon, a common means-forindexing both of said carrierssimultaneouslyand arranged 'to bring work holding 'means' of one carrier into registrywith workholding means-on the other carrier for each indexing movement,a tool carrier, a plunger on i said tool carrier means for advancing oneof saidwork holding'c'arriersand said tool carrier relatively to eachother, said plunger operating to-itransfer a., work piece from onecarrier to-the other. during the adv'ancing' movementiofl-said toolcarrier and i I work carrierarelatively toeach other.

-. 6. In a machine ofthecharacterindicated,

- aspindle carrierg'gaplurality 'ofrotatable' spindles therein, meansfor indexing said carrier, a magazine feed member having f a Igozplurality of'means for holding work pieces, 7

means connecting sa d work carrler and sa1d I magazine feed member tocause one ofsaid work: holding meansto' come into registry with one ofsaid'spindles for each indexing 252' movement, a tool slide, means foradvancing I the same relatively tovsaid spindle carrierja j fixed plateadjacent said feedvmemberfor axially positioning said workpieces andmeans-carried by said tool slide for transfer-' 7 $05 ring -aworkpiecefrom-said magazine feed therewith. .c .7 In amachine of thecharacter indicated, a work carrier having a plurality of work 3 memberto the" spindle which is in 'registry a5} holding 'means thereon, meansfor indexing saidcar-rier; a second work holding carrier,' a gearcarried by saidfirst carrier and means actuated by said gear forindexing said'second' carrier while said first carrier is'being 4o.indexed, said carriers being arranged to cause a registry of workholding means in each of said carriers :foreach indexing movement so asto permit the transfer of work pieces from one carrier-to the other, afixedplateadjacent one of saidcarriers, andmeans totransfer a work piecethrough saidplate to a work holder on the spindle opposite thereto. 3 8.A magazine feed device comprising a carrier having a plurality of workpiece hold- 605 ingv means thereon, each of said plurality of work pieceholding means including resiliently pressed jaws for gripping the work fpiece, saidja-ws being-relieved at the rear sides topermita Work pieceto be grasped eel on-its small diameter while'receiving an en- 6 piece.

largement in the space provided by said re-i lieved jaws, said jawsbeing movable to per- I mit the enlargement of'a work piece to spreadsaid jaws duringfthe :ejection of the work' i ROBER s; BROWN.

